Hydrides

Question 1

Hydrogen can form compounds with all elements in the second and third periods wart form the:

Answer 1

Noble Gases

Question 2

What is the bonding between Lithium and hydrogen?

Answer 2

Ionic

Question 3

What type of hydrogen ion is present in lithium hydride?

Answer 3

Negative hydrogen Ion

Question 4

The negative hydrogen ion is a very strong ………. agent?

Answer 4

Reducing

Question 5

A reducing agent ………

Answer 5

Donates electrons

Question 6

What do ionic hydrides produce when added to water?

Answer 6

Hydrogen gas and an alkaline solution

Question 7

Which three hydrides have surprisingly high boiling points

Answer 7

NH4 H2O HF

Question 8

What is responsible for the six-fold symmetry seen in snowflakes?

Answer 8

Directional intermolecular hydrogen bonds

Question 9

Why are hydrogen bonds vital for the existance of life?

Answer 9

The double helical structure of DNA is built around hydrogen bonds.

Question 10

What can covalent hydrides form when reacting with water

Answer 10

Weak bases and strong and weak acids

Question 11

What electrode does hydrogen form at during electrolysis of the molten hydride?

Answer 11

Positive electrode